package homework.homework_5.computer;

/**
 * @Author admin
 * @Date 2019/3/22 10:55
 */
public class Test {
    public static void main(String[] args) {
        Computer computer=new Computer();
        computer.usbs[0]=new Mouse();
        computer.usbs[1]=new KeyBoard();
        computer.usbs[2]=new Mic();
        computer.powerOn();
        computer.powerOff();
    }
}
